(1)電極嘴燒損出絲不暢; (2)焊絲粘在電極嘴上; (3)送絲軟管堵塞; (4)送絲壓輪過松; (5)電弧未引燃。
(1)導(dǎo)電嘴不好; (2)送絲軟管不通暢; (3)送絲輪磨損嚴(yán)重; (4)壓輪壓力調(diào)整不當(dāng)?shù)仍蛞稹?/p>